Airflow capture hood

Abstract

Implementations of airflow capture hoods may include a central support coupled with a plurality of ribs configured to support a bottom end of a capture hood in an open position. The central support may be coupled with a plurality of poles configured to support an upper end of a capture hood in an open position.

What is claimed is: 
     
       1. An airflow capture hood comprising:
 a pliable skirt comprising a first opening at a first end of the airflow capture hood and a second opening at a second end of the airflow capture hood; and 
 a measurement grid coupled within a volume defined by the pliable skirt; 
 wherein the airflow capture hood is configured to measure a passage of air through the airflow capture hood. 
 
     
     
       2. The airflow capture hood of  claim 1 , further comprising a central support coupled within a volume of the pliable skirt. 
     
     
       3. The airflow capture hood of  claim 2 , wherein the measurement grid comprises a plurality of ribs extending radially from the central support. 
     
     
       4. The airflow capture hood of  claim 1 , further comprising a sensor configured to detect airflow, the sensor within a volume of the pliable skirt. 
     
     
       5. The airflow capture hood of  claim 1 , wherein the second end of the airflow capture hood is comprised within a base of the airflow capture hood, and wherein the base of the airflow capture hood does not comprise a rigid outer shell. 
     
     
       6. An airflow capture hood comprising:
 a central support coupled with a plurality of ribs configured to support a bottom end of an airflow capture hood in an open position; 
 wherein the central support is coupled with a plurality of poles configured to support an upper end of the airflow capture hood in an open position; 
 wherein the bottom end of the airflow capture hood does not comprise a rigid shell; and 
 wherein the plurality of ribs are within an interior of the airflow capture hood. 
 
     
     
       7. The airflow capture hood of  claim 6 , wherein the airflow capture hood is configured to measure air passing through the airflow capture hood. 
     
     
       8. The airflow capture hood of  claim 6 , wherein the central support is entirely within a volume of a pliable skirt comprised in the airflow capture hood. 
     
     
       9. The airflow capture hood of  claim 6 , wherein the plurality of ribs extend radially from the central support. 
     
     
       10. The airflow capture hood of  claim 6 , wherein a bottom end of the airflow capture hood is formed by a pliable skirt. 
     
     
       11. The airflow capture hood of  claim 6 , wherein the airflow capture hood weighs less than four pounds. 
     
     
       12. An airflow capture hood comprising:
 a central support coupled with a plurality of ribs configured to support a bottom end of an airflow capture hood in an open position, the central support coupled with a plurality of poles configured to support an upper end of the airflow capture hood in an open position; and 
 a pliable skirt comprising the bottom end of the airflow capture hood and the upper end of the airflow capture hood; 
 wherein the airflow capture hood is configured to measure air passing through the airflow capture hood. 
 
     
     
       13. The airflow capture hood of  claim 12 , further comprising no rigid outer shell. 
     
     
       14. The airflow capture hood of  claim 12 , wherein the airflow capture hood weighs less than 4 pounds. 
     
     
       15. The airflow capture hood of  claim 12 , wherein the plurality of ribs extend radially from the central support. 
     
     
       16. The airflow capture hood of  claim 12 , wherein the plurality of ribs is a measurement grid and wherein the plurality of ribs is configured to allow air to enter each rib at an opening in each rib. 
     
     
       17. The airflow capture hood of  claim 12 , wherein a top end of the airflow capture hood is collapsible. 
     
     
       18. The airflow capture hood of  claim 12 , wherein the plurality of ribs extend through a plurality of openings in the pliable skirt. 
     
     
       19. The airflow capture hood of  claim 12 , further comprising no rigid base forming a rigid outer perimeter of the airflow capture hood coupled to pliable skirt.